Lee Precision O-ring 5/16 x .070 for Load-Master press – RE1528

Lee Precision O-ring 5/16 x .070 – RE1528

Original Lee Precision replacement O-ring, 5/16-inch inner diameter and .070-inch cross-section. Lee lists this as a spare part for the Load-Master progressive press in versions produced from 1982 to 2022, indicating a required quantity of one piece.

On Lee presses and dies, O-rings of this size function as an elastic friction element: they allow a threaded component or lock ring to remain in the set position without locking permanently, maintaining the adjustment between cycles. Being an elastomer component, it is subject to hardening and compression over time, so it should be replaced when it loses elasticity or when the component it secures no longer holds its setting. It must be distinguished from other O-rings in the Lee catalog, which differ in inner diameter and cross-section.

Main features

• Inner diameter: 5/16"
• Cross-section: .070"
• Material: elastomer
• Quantity indicated by Lee: 1 piece

Recommended use

Replacement part for the Lee Load-Master progressive press, 1982-2022 series; compare with the official exploded view before installation.

Manufacturer code: RE1528